body {
    font-family: sans-serif;
    margin: 20px;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

#container {
    background-color: #ffffff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.list {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.item {
    background-color: #e0e0e0;
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 4px;
}

button {
    background-color: #4caf50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

.message p {
    background-color: #add8e6;
    padding: 10px;
    border-radius: 4px;
    margin-top: 20px;
}